20627525 has 6 divisors (see below), whose sum is σ = 25578162. Its totient is φ = 16502000.

The previous prime is 20627489. The next prime is 20627531. The reversal of 20627525 is 52572602.

It can be written as a sum of positive squares in 3 ways, for example, as 4739329 + 15888196 = 2177^2 + 3986^2 .

It is not a de Polignac number, because 20627525 - 2¹⁸ = 20365381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 412526 + ... + 412575.

It is an arithmetic number, because the mean of its divisors is an integer number (4263027).

Almost surely, 2^20627525 is an apocalyptic number.

20627525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20627525 is a deficient number, since it is larger than the sum of its proper divisors (4950637).

20627525 is an equidigital number, since it uses as much as digits as its factorization.

20627525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825111 (or 825106 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20627525 is about 4541.7535159892. The cubic root of 20627525 is about 274.2515183864.

The spelling of 20627525 in words is "twenty million, six hundred twenty-seven thousand, five hundred twenty-five".